Truck



April 6, 19 3- 'r. v; BUCKWALTER I TRUCK Filed July 26, 1941 2 s heetssheet 1 a. m M w M HinFig. 1,

V Patented Apr. 6, 1943*) a UNITED STATES PATENT OFFICE I, 2,316,046 c I p v .TRUCK' Tracy V. Buckwalter, Massillon, Ohio, assignorzto The'limken Roller Bearing Compan Canton,

' Ohio, a corporationof Ohio e Application July 26, 1941, Serial No. 494,139

The invention consists in the railway car. truck and in the parts and combinationsand arrangements of parts hereinafter described and claimed; I

In the accompanying drawings which form part of this specification and wherein like reference characters refer to like parts whereverv they occur, i

Fig. 1 .is part plan' view, part horizontal sectional view of a railway car truck embodying my invention, 7 e l Fig. 2 isfa sectional view taken on *the line 2-2 m 1,

' Fig. 3 is a sectional view talien on the line HinF-ig.1, v, Fig, 4 is a sectional view taken on the line Fig. 5 is an, enlarged plan, part horizontal truck, 4

Fig. 6 is a sectional view" taken on the line,

H in Fig.1,

Fig. 7 is a sectional view taken on the line Fig. 8 is a side elevational view of the bolster, Fig; 9 is a side elevational view of the main spring plank,

Fig. 10 is a perspectiveview of a portion of the auxiliary spring plank; and

Fig; 11 is-a perspective view of onesof the spring cap members;

My car truck, which is of the inboard type, comprises generally. a pair of axles A having flanged wheels 3 fixed thereon, axle housings C enclosing the 'axles'between the wheels, tapered and a spring plank G, said bolster and said sprin plank extending across the middle of said truck. Each of the tapered-roller bearhousings having suitable closures l secured theretO. l

One end I of each side frame is preferably integralwith the end 'of one axle housing forming a rigid corner and the other end of each side sectional view of a portion of the car has for its principal object to provide a car truck 3 Claims (01, 105-182) I i frame has a law 6 fitting over the end of theother axlehousing, the rigid corners of said truck being diagonally opposite each other. Such a truck is-shown in my Patent No. 1,640,180 dated August 23, 1927. i 1 g Each side frame E has an upper member I and a lower member 8 extending longitudinally thereopenings ill and outwardly of the side frames;

Springs, generally indicated as H, are mounted on each end of said spring plank, said springs being interposed between said spring plankf and the ends of said bolster to provide a support for opening. III in the spring plank to form seats II t for said springs H and the outer ends of said.

said bolster. ,The spring plank G is channelshaped and the ends are offset downwardly from the portions thereof extending through the seats have short upstanding flanges I: to retain said springs in said seats. vLugs I 3- depending from the bottom of. said spring plank are prowith the offsetend portions to in proper position, a

The springs H interposed between each end of said bolster and said spring plank comprise a group of four upper springs I having wear,

' roller bearings D interposed between the ends of the axle housing and the axle, truck side frames E connecting said axle housings C, a bolster F bolster F, thus enclosingth'e central 'plates is at the top and bottomthereof and a group of four lower-springs it having wear plates llat the top and bottom thereof, said wear plates wear plates li'of the upper groups of springs l4 are the ends of an auxiliary spring plank IS, the ends of said auxiliary spring plank being folded upon themselves to formupwardly and downwardlyextending flanges in which retain said auxiliary spring plank in position between said wear plates. The central portion Il of said aux iliary spring plank l9 between the springs on each side of said'truck is of rectangular pan shape, having a bottom wall 2| a, side walls II b, and end walls He. The sides 22 of said main spring plank telescope over the sides 23 of the the auxiliary springplank.

. The bolster F is hollow and the bottom all I.

portion. of

- truck.

terminates short of the ends thereof, said bolster having a reinforcing member 25 in the middle alinementwith the springs on portion thereof. The ends of said bolster are.

offset upwardly from the portions extending through the openings 10 in the side frames and they form' spring seats 28 whose end portions have short flanges 21 depending downwardly therefrom. The top 28 of the bolster is provided with the center bearing}! and side bearsides of the bolster and prevent displacement of the bolster longitudinally with reference to the truck.

My truck offers numerous advantages. By disposing the springs outwardly of the side plank in vertical said spring plank, and a bolster extending through said side frame openings and having resting on upwardly offset projecting portions said last named springs.

'2. An inboard car truck comprising axles,

wheels on the ends thereof, housings for said axles, side frame members connecting said hous-i ings inwardly of said wheels, said housings being fixed to said side frames at two diagonally opposite corners and movable th'erein at the other two corners, said side frames having central openings with bottom walls, a spring plank extending through said openings seating on said bottom .walls and having stepped down end portions pro- ..jecting outwardly beyond said side frames,

springs on said projecting end portions of said frames, the distance between the spring centers is increased, thereby improving the spring action. By offsetting the ends of the spring plank down: wardly and the ends of the bolster upwardly, sufllcient space is provided between the bolster and the spring plank so that a double spring set may be used, the springs of which act in series,

thus giving double the deflection for the same spring load. This also provides for soft spring action and improved riding qualities. Theuse of an auxiliary spring plank further improves the riding qualitiesof the truck.

Obviously, numerous modifications of my in-,

vention may be made and I do not wish to bid limited to the precise construction shown.

What I claim is: 1

1. An inboard .car truck comprising axles,

wheels on the ends thereof, housings for said axles, side frame members connecting said housings inwardly of said wheels, said side frames having central openings with bottom walls, a

spring plank .extendingthrough said openings seating on said bottom walls and having stepped down end portions projecting outwardly beyond said, side frames, springs on said projecting end portions of said spring plank, a secondary spring plank whose ends rest on said springs, springs on'the end portions of said secondary spring spring plank, a secondary spring plank whose ends rest on said springs, springs on the end portions of said secondary spring plank in alinement with the springs on said spring plank, and

a bolster extending throughsaid side frame openings and resting on said last named springs.

3. An inboard car truck comprising 1 axles,

' wheels on the ends thereof,v housings for said axles, side frame members cpnnecting said nousings inwardly of said wheels, said side frame members being fixed to said housings at two diagonally opposite corners and movable there-' on at the other two corners, said side frames haying central openings with bottom walls, a

spring plank extending through said openings,

' seating on said bottom walls and having stepped down end portions projecting outwardly beyond said side frames, springs on said projecting end portions of said spring plank, a secondary spring plank whose ends rest. on said springs, springs on the end portio'nsmt said secondary-spring plank, a bolster ex nding through said side frame openings and esting on said last named springs, brackets ext ding from the outer sides of said side frames adjacent to said bolster to prevent said bolster frommoving longitudinally of said truck, and flanges projecting upwardly from the top of said bolster to'engage said side frames to prevent said bolster from moving laterally of said truck.

TRACY V. BUCKWAL'I'ER. 

